EN 10255

BS 1387: 1985 has been withdrawn and replaced with the European Standard EN 10255 : 2004 (implemented by UK national standard body as BS EN 10255 : 2004 "Non-alloy steel tubes suitable for welding or threading"). The table below gives the corresponding types in BS 1387 and EN 10255.


EN 10255 L  
EN 10255 L1
EN 10255 L2 BS 1387 Light
EN 10255 Medium BS 1387 Medium
EN 10255 Heavy BS 1387 Heavy

BS 1387(Light)

 Normal Bore Outside Diameter Thickness Mass
Light Medium/Heavey Light Medium Heavey Light Medium Heavey
in
mm
mm
mm
mm
mm
mm
Kg/m
Kg/m
Kg/m
1/4 8 13.60 13.90 1.80 2.30 2.90 0.515 0.641 0.765
3/8 10 17.10 17.40 1.80 2.30 2.90 0.670 0.839 1.020
1/2 15 21.40 21.70 2.00 2.60 3.20 0.947 1.210 1.440
3/4 20 26.90 27.20 2.30 2.60 3.20 1.380 1.560 1.870
1 25 33.80 34.20 2.60 3.20 4.00 1.980 2.410 2.940
1(1/4) 32 42.50 42.90 2.60 3.20 4.00 2.540 3.100 3.800
1(1/2) 40 48.40 48.80 2.90 3.20 4.00 3.230 3.570 4.380
2 50 60.20 60.80 2.90 3.60 4.50 4.080 5.030 6.190
2(1/2) 65 76.00 76.60 3.20 3.60 4.50 5.710 6.430 7.930
3 80 88.70 89.50 3.20 4.00 5.00 6.720 8.370 10.300
4 100 113.90 114.90 3.60 4.50 5.40 9.750 12.200 14.500
5 125   140.60   5.00 5.40   16.600 17.900
6 150   166.10   5.00 5.40   19.700 21.300

The standard is applicable to tubes of nominal size DN8 to DN150 in light, medium and heavy thickness.

  • The BS 1387 : 1985 specification for screwed and socket steel tubes and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads.
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